Early-est:     Off East Coast of Kamchatka    2025.08.02-22:28:52.38    q:A      mb:4.9*    Mwp:-    Mwpd:-    Td*T50Ex:-     fmamp_polarity:./hypo.1754173736446.mech.fmamp_polarity.thumb.jpg     fmamp_polarity_waveform:./hypo.1754173736446.mech.fmamp_polarity_waveform.thumb.jpg     hash:./hypo.1754173736446.mech.hash.thumb.jpg

Automatic solution - this event has not been reviewed by a seismologist
Automatically determined event information may be incorrect!

Earthquake Details:
Magnitude: mb: 4.9* [53]    Mwp: 5.5X [1]    Mwpd: - [0]
Region: Off East Coast of Kamchatka
Origin Time: 2025.08.02-22:28:52.38 UTC
Hypocenter: lat: 51.63°  lon: 159.22°  [+/-13km]    depth: 2km  [+/-13km]
Location Quality: qualityCode:  A     stdErr: 1.3s   assocPhases: 92   usedPhases: 57
minDist: 1.4°   maxDist: 85.2°   AzGap: 144°   2ndAzGap: 164°   atten: -0.93 [+/-0.33]
Location Uncertainty: 68%ConfEllipse:   minHorUnc: 11km   maxHorUnc: 13km   azMaxHorUnc: 122°
68%ConfEllipsoid:   semiMajorAxisLength: 17km   majorAxisAzimuth: 292°   majorAxisPlunge: 28°   semiIntermediateAxisLength: 14km   intermediateAxisAzimuth: 190°   intermediateAxisPlunge: 22°   semiMinorAxisLength: 11km
Tsunamigeneic Assesment:
Discriminants: Prob Underwater: >99%
T50Ex: 0.5 [33]    Td: 0.9Xs [3]    Td*T50Ex: - [0]    To: 2.7s [28]
Closest plate boundaries:
   Okhotsk / Pacific [subduction zone]: distance: ~100km
   North America / Pacific [subduction zone]: distance: ~510km
   Okhotsk / North America [subduction zone]: distance: ~510km
Subduction geometry:    Zone: Kamchatka/Kurils/Japan: DEBUG: error: [Errno 2] No such file or directory: 'gmt'    Slab depth at epicenter: error: evaluating slab depth: -999.9
Decision table (TEST!):
Event type: Subduction Zone Other Thrust/Normal Strike-slip
Compatible close plate boundary?:
 YES (100km)
 no
 no
Prob underwater:
 >99%
 >99%
 >99%
Td*T50Ex:
   -
   -
   -
Td*To:
     -
     -
     -
Mwp magnitude:
       -
       -
       -
Hypocenter depth:
       2km
       2km
       2km
Slab depth at epicenter:
       n/a
       -
       -
Tsunami and Rupture predictions (TEST!): No prediction: Event too small (Mwp<7.0) or too few Mwp readings (N<20)
./hypo.1754173736446.map.jpg

First-motion Focal Mechanism (FMAMP_POLARITY):    (Warning: Unreliable solution, qualityCode=C)
Nodal Plane 1: strike: 154°   dip: 35°   rake: 49°
Nodal Plane 2: strike: 20°   dip: 64°   rake: 114°
Quality: azimuthalGap: -1°   stationPolarityCount: 56   misfitWeightCount: 7.7   misfit: 0.15   stationDistributionRatio: 0.65   meanDistP: 44.9   meanDistT: 31.5   qualityCode: C
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity
./hypo.1754173736446.mech.fmamp_polarity.mechanism.jpg
First-motion Focal Mechanism (FMAMP_POLARITY_WAVEFORM):    (No solution available)
Nodal Plane 1: strike: 0°   dip: 0°   rake: 0°
Nodal Plane 2: strike: 270°   dip: 90°   rake: 90°
Quality: azimuthalGap: -1°   stationPolarityCount: 0   misfitWeightCount: -1.0   misfit: -1.00   stationDistributionRatio: -1.00   meanDistP: -1.0   meanDistT: -1.0   qualityCode: X
Method: methodID: smi:net.alomax/focalmec/fmamp_0.0.5X_2016.06.14/_polarity_waveform
./hypo.1754173736446.mech.fmamp_polarity_waveform.mechanism.jpg
First-motion Focal Mechanism (HASH):    (Warning: VERY UNRELIABLE SOLUTION, qualityCode=D)
Nodal Plane 1: strike: 39°   dip: 57°   rake: 99°
Nodal Plane 2: strike: 204°   dip: 34°   rake: 77°
Quality: azimuthalGap: 144°   stationPolarityCount: 55   misfit: 0.38   stationDistributionRatio: 0.67   rmsAngDiffAccPref: 35.83   fracAcc30degPref: 0.56   qualityCode: D
Method: methodID: smi:gov.usgs/focalmec/HASH_1.2
./hypo.1754173736446.mech.hash.mechanism.jpg

Event ID: smi:alomax.net_BETA/author/ee/event/1754173736446
Event info last updated: 2025.08.02-23:27:00 UTC
Event first association/location: 2025.08.02-22:36:02 UTC
Software: Early-est 1.2.10 (2024.02.23)
Agency: alomax.net_BETA